Overview
| Stage | Permitting |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
The Sterling and Crown exploration properties are owned by the Company’s wholly owned subsidiary, Coeur Sterling, Inc. (“Coeur Sterling”) and are located in southern Nevada, The Sterling gold project is a past-producing open-pit and underground heap leach gold mine located in the southern portion of the land package with major permits in place.
Coeur is in the process of amending existing permits at the Crown and Sterling projects to support future planned activities. |
Source:
p. 1
On November 4, 2022, Coeur Mining, Inc. closed the transaction to sell its Crown and Sterling holdings to a subsidiary of AngloGold Ashanti Limited. Under the terms of the previously announced transaction, Coeur received cash consideration of $150 million at closing. The Company will receive an additional deferred cash consideration of $50 million upon Crown Sterling attaining a total resource of at least 3.5 million gold ounces.
Contractors
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Deposit Type
- Sediment-hosted
- Carlin-type
Summary:
Sterling is fairly typical of sediment-hosted, disseminated precious metal deposits, also termed Carlin-type deposits.
Gold occurs in the rims of microscopic pyrite grains (actually arsenian pyrite rims). The pyrite formed during hydrothermal alteration and brecciation resulting from the interaction between: gold-bearing solutions rising along high-angle fault feeders from depth; soluble carbonate rocks; and iron-bearing silty lithologies. The process was most effective at a site of permeability contrast or barrier, and was accompanied by decalcification and solution brecciation, and silicification and clay alteration in breccia clasts, matrix, and in the wall rocks. Subsequent oxidation of the pyrite converted it to iron oxide/hydroxide minerals but without removing gold particles, allowing heap leaching of the ore to extract the gold. Favourable geological conditions existed (1) in the original Sterling mine at the thrust contact (siltstone/phyllite structurally above dolostone, especially trending along intersecting fault feeders), and (2) in the 144 zone at the contact between silty dolostone of the basal Bonanza King and the underlying Carrara limestone. The clay-altered margin of a large, Tertiary quartz latite dike in the 144 zone was also conducive for high-grade gold mineralization. In all cases, mineralization is generally stratabound but discontinuous, and typically ranges in thickness from 5-10 ft to over 30 ft (2 to 9 m).
In the Sterling pr ........
Summary:
Sterling is an exploration property located in southern Nevada (approximately 115 miles north of Las Vegas).
The high-grade Sterling gold project is a fully-permitted, past producing open-pit and underground heap leach gold mine.
Source:
Summary:
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Projected Production:
| Commodity | Units | 2015 | 2014 | 2013 |
|
Gold
|
oz
| 1,740 | 5,725 | 7,431 |
All production numbers are expressed as metal in doré.
Operational Metrics:
| Metrics | 2014 | 2013 |
|
Tonnes processed
| 45,217 tons | 160,789 tons |
Reserves at December 31, 2021:
Sterling Open Pit Mineral Resource reported above a gold cutoff of 0.007 ounces per ton.
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Inferred
|
36,824,000 tons
|
Gold
|
0.025 oz/t
|
914,000 oz
|
Financials:
| | Units | 2022 | 2016 |
|
Capital expenditures (planned)
|
M USD
| ...... |
|
|
Capital expenditures
|
M
| |
0.3 CAD
|
|
Revenue
|
M
| |
0.8 CAD
|
|
After-tax Income
|
M
| |
-8.9 CAD
|
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Mine Management:
| Job Title | Name | Profile | Ref. Date |
|
.......................
|
.......................
|
|
Feb 25, 2022
|
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Staff:
| Employees | Year |
|
|
2019
|
|
|
2018
|
Corporate Filings & Presentations:
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